#define   _CRT_SECURE_NO_WARNINGS  1
#include<stdio.h>
int my_strlen(char * p)
{
	int count = 0;
	while (*p++)
	count++;
	return count;
}
int main()
{
	char arr[] = "abc";
	int ret = my_strlen(arr);
	printf("%d", ret);
	

	return 0;
}



